Help me out with this pe question plz :c

With what speed would mail pass through the center of the Moon if falling in a tunnel that runs through the center

ratelena [41]

Answer:

$v_f = = 7.9 \times10^3 \text{ m/s }$

7 0

2 years ago

What is the potential energy of a 0.5 kg ball sitting on a table 1 meter

arsen [322]

Hey!!

Mass=0.5kg

H=1 meter

Gravity=9.8m/s^2

Now,

Potential energy=m*g*h

 = 0.5*9.8*1

 =4.9 J

The right answer is 4.9 Joule.

Hope it helps

Good luck on your assignment

6 0

3 years ago

Read 2 more answers

Ax = 44.4 m and Ay = 25.1 m Find the magnitude of the vector.

max2010maxim [7]

Answer:

The magnitude of the vector A is 51 m.

Explanation:

Given:

The horizontal component of a vector A is given as:

$A_x=44.4\ m$

The vertical component of a vector A is given as:

$A_y=25.1\ m$

Now, we know that, a vector A can be resolved into two mutually perpendicular components; one along the x axis and the other along the y axis. The magnitude of the vector A can be written as the square root of the sum of the squares of each component.

Therefore, the magnitude of vector A is given as:

$|\overrightarrow A|=\sqrt{A_{x}^2+A_{y}^2}$

Now, plug in 44.4 for $A_x$ , 25.1 for $A_y$ and solve for the magnitude of A. This gives,

$|\overrightarrow A|=\sqrt{(44.4)^2+(25.1)^2}\\|\overrightarrow A|=\sqrt{1971.36+630.01}\\|\overrightarrow A|=\sqrt{2601.37}\\|\overrightarrow A|=51\ m$

Therefore, the magnitude of the vector A is 51 m.

6 0

3 years ago

1.0 liter of 20c water is mixed with 4 liters of 40c water. What will be the temperature of this mixture

Virty [35]

Answer:

36°C

Explanation:

Heat gained by the cold water = heat lost by the warm water

mCΔT = mCΔT

(1000 g) (4.184 J/g/K) (T − 20°C) = (4000 g) (4.184 J/g/K) (40°C − T)

1000 (T − 20°C) = 4000 (40°C − T)

T − 20°C = 4 (40°C − T)

T − 20°C = 160°C − 4T

5T = 180°C

T = 36°C

8 0

3 years ago

NEED HELP ASAP!!!! problem is shown in the attached image

Lena [83]

Answer:

im sorry but what is the question please tell me in the comments s i can help you

Explanation:

5 0

3 years ago